Human Eye and Vision
Physics ⇒ Light and Optics
Human Eye and Vision starts at 8 and continues till grade 12.
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See sample questions for grade 9
A person can see objects clearly only when they are between 50 cm and 2 m from his eyes. What kind of defect does he have?
A person has a near point of 50 cm. What power of lens (in diopters) is required to correct his vision to normal (assume normal near point is 25 cm)?
A person with normal vision can read a book at 25 cm but cannot see clearly at 1 m. What defect does he have?
Describe the role of the cornea in vision.
Explain the process of image formation in the human eye.
Explain why a person with myopia can see nearby objects clearly but not distant objects.
Explain why we do not notice the blind spot in our day-to-day vision.
Name the fluid that fills the space between the lens and the retina.
Name the transparent front part of the eye that covers the iris and pupil.
What is astigmatism and how is it corrected?
What is the approximate value of the least distance of distinct vision for a normal human eye?
What is the function of the optic nerve?
What is the function of the pupil in the human eye?
What is the function of the retina in the human eye?
What is the main cause of presbyopia?
Which cells in the retina are responsible for color vision?
Which defect of vision is corrected by using a concave lens?
Which part of the eye acts as a natural screen where the image is formed?
Which part of the human eye controls the amount of light entering the eye?
A person with normal vision underwater finds it difficult to see clearly. Explain why this happens in terms of the refractive indices of water and the cornea.
